﻿using Unity.Entities;

namespace Unity.Entities
{
    public class ComponentSystemBase {}
    public class SystemBase : ComponentSystemBase
    {
        protected virtual void OnUpdate() {}
    }
}

public class ParentClass
{
    public partial class BigmapSystemBase : SystemBase
    {
        protected override void OnUpdate()
        {
            DoThing();
        }

        private void DoThing()
        {
        }
    }
}